Vane control
AssigneeHoneywell International Inc.
InventorChristopher Greentree
Life of this patent
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Abstract
An exemplary controller includes a control valve that includes an electric actuator operatively coupled to a valve stem, a piston operatively coupled to one or more hydraulic fluid paths controlled by the control valve and including a piston shaft, a rotatable shaft operatively coupled to the piston shaft and mechanically isolated from the valve stem and capable of adjusting geometry of the variable geometry turbine, and an electronic sensor capable of sensing an angular position of the rotatable shaft. Various other exemplary systems, methods, devices, etc., are also disclosed.
Claims14
A control system for a variable geometry turbine comprising:
- a control valve that includes an electric actuator operatively coupled to a valve stem;
- a piston operatively coupled to one or more hydraulic fluid paths controlled by the control valve and including a piston shaft;
- a rotatable shaft operatively coupled to the piston shaft and mechanically isolated from the valve stem and capable of adjusting geometry of the variable geometry turbine;
- and
- an electronic sensor capable of sensing an angular position of the rotatable shaft.
A method for controlling a variable geometry turbine comprising:
- providing a pulse width modulated signal to a control valve having a valve stem;
- in response to the providing, moving the valve stem;
- in response to the moving, flowing hydraulic fluid;
- in response to the flowing, translating a piston;
- in response to the translating, rotating a crank shaft wherein the crank shaft is mechanically isolated from the valve stem;
- in response to the rotating, adjusting one or more geometry elements of the variable geometry turbine;
- and
- determining geometry based at least in part on angular position of the crank shaft.
Dependencies are inferred from the claim text.